#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	int ans = 0;
	for (int a = 1; a < 10; a++)
	{
		for (int b = 1; b < 10; b++)
		{
			if(a != b)
				for (int c = 1; c < 10; c++)
				{
					if(c != a&& c!= b)
						for (int d = 1; d < 10; d++)
						{
							if(d != a && d != b && d!= c)
								for (int e = 1; e < 10; e++)
								{
									if (e != a && e != b && e != c && e != d)
										//ab * cde == adb * ce
										if ((a * 10 + b) * (c * 100 + d * 10 + e) == (a * 100 + d * 10 + b) * (c * 10 + e))
											ans++;
								}
						}
				}
		}
	}
	printf("%d", ans);
	return 0;
}